Note: Basecamp 3 apps for Windows, Mac, Android and iOS only work with accounts created on the new Basecamp 3 released in Fall 2015. Basecamp Classic or Basecamp 2 work with your desktop web browser on Windows and Mac or the Basecamp 2 apps for iOS and Android. You can use Basecamp 2 and Basecamp 3 on the same device if you have both (or all three) kinds of accounts.
Last updated on February 21, 2019